US envoys Steve Witkoff and Jared Kushner arrived at the ​Kremlin on Thursday for talks with Russian President Vladimir Putin, in a new push for a peace deal in Ukraine despite what they have called a lack ‌of trust between Moscow and Kyiv. The negotiations are the 10th time Witkoff has met Putin in person during a conflict that has lasted longer than the Soviet Union's fight against Nazi Germany in World War Two, and follow two days of US-led trilateral peace talks in Abu Dhabi. After the Abu Dhabi talks, the first direct US-mediated negotiations between Russia and Ukraine in nine months, the sides said they had agreed on a major ​exchange of prisoners of war that is likely to happen in the coming weeks, but announced no breakthrough in wider negotiations. As he entered a Moscow hotel before the ​Kremlin talks, Witkoff was asked by a reporter whether progress made in the talks so far meant peace was closer. "I hope so," he replied. Russian ⁠and Ukrainian negotiators reported some progress in Abu Dhabi, but the US side said differences remained on major issues, including territory. Witkoff and Kushner are expected to fly to Dublin later ​on Thursday for talks with Ukrainian President Volodymyr Zelenskiy, who said on Wednesday he hoped a result in the talks could be achieved by the end of this year, but that much depended ​on how the United States approached Moscow. Read: Russian diplomats and military officials to join talks with US and Ukraine, Kremlin says resident Donald Trump, who once said he could end the now 4-1/2-year-old conflict in 24 hours, has instructed Witkoff and Kushner, his son-in-law, to make a new push for peace, which he hopes will burnish his self-styled credentials as a peacemaker. He said last week that the conflict was close to being settled in a "big beautiful agreement", though he has frequently predicted breakthroughs that have not materialised. Disagreement on terrorist Kyiv has rejected a demand by Putin, who sent troops into Ukraine in February 2022, to surrender the whole of the eastern Donbas region in return for peace - something Russian ​forces are trying to achieve on the battlefield in the face of fierce Ukrainian resistance. Moscow has not made major territorial gains this year, but has heavily attacked Ukrainian infrastructure and Kyiv has frequently struck ‌Russian oil refineries ⁠with drones, causing fuel shortages over the summer, a problem which has resurfaced in some regions this week according to local officials. Putin has shown no signs of being ready to moderate his territorial demands, which include a buffer zone in parts of Ukraine which Russia has not formally claimed as its own. Vladimir Medinsky, Putin's lead negotiator in the Abu Dhabi talks, told state TV on Wednesday that "wherever the foot of our Russian soldier has stepped, that is ours." He was also cited by the TASS state news agency as saying that "every inch" of what Moscow ​regards as Russian land would be returned. There is ​tension too over a Ukrainian and European desire - ⁠backed by the United States - for the European Union, whose big member states are staunch backers of Kyiv, to have a seat at the negotiating table. The Kremlin has said that the EU should be included in the talks at some stagebut has poured cold water on the idea ​in recent days. It points to a lack of constructive proposals from Brussels and an inability by the EU to select someone ​to represent it in any ⁠future talks, and says it lacks realism. Kaja Kallas, the EU's foreign policy chief, accused Russia on Monday of pretending to negotiate and said Moscow had shown no goodwill in talks while continuing to bomb Kyiv. With talks deadlocked on territory, US mediators have tried to steer discussions towards post-war security guarantees and reconstruction, and Russia has spoken of the need to agree on a post-war security framework for Europe. A ⁠senior Russian diplomat ​said on Wednesday that Moscow could conclude non-aggression pacts with NATO member states. But the idea of discussing such matters ​has stirred fears in Kyiv and among its allies too. European Commission President Ursula von der Leyen said on Monday that wider European security talks should come only once there is a ceasefire in Ukraine. Moscow has rejected the idea of ​a temporary ceasefire, saying it wants an overall deal to end the war rather than a pause in which Ukraine might re-arm.